US20160003288A1 - Tapered Flange Nut With Locking Insert - Google Patents
Tapered Flange Nut With Locking Insert Download PDFInfo
- Publication number
- US20160003288A1 US20160003288A1 US14/853,643 US201514853643A US2016003288A1 US 20160003288 A1 US20160003288 A1 US 20160003288A1 US 201514853643 A US201514853643 A US 201514853643A US 2016003288 A1 US2016003288 A1 US 2016003288A1
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- United States
- Prior art keywords
- longitudinal end
- nut
- bolt
- opening
- tapered
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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- 238000009434 installation Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
- F16B39/34—Locking by deformable inserts or like parts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B33/00—Features common to bolt and nut
- F16B33/002—Means for preventing rotation of screw-threaded elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B37/00—Nuts or like thread-engaging members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
- F16L3/08—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing
- F16L3/10—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing divided, i.e. with two or more members engaging the pipe, cable or protective tubing
- F16L3/1008—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing divided, i.e. with two or more members engaging the pipe, cable or protective tubing with two members engaging the pipe, cable or tubing, both being made of thin band material completely surrounding the pipe
- F16L3/1016—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing divided, i.e. with two or more members engaging the pipe, cable or protective tubing with two members engaging the pipe, cable or tubing, both being made of thin band material completely surrounding the pipe the members being joined by means of two screws
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
- F16L3/08—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing
- F16L3/10—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing divided, i.e. with two or more members engaging the pipe, cable or protective tubing
- F16L3/11—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing divided, i.e. with two or more members engaging the pipe, cable or protective tubing and hanging from a pendant
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
- F16L3/08—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing
- F16L3/12—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing comprising a member substantially surrounding the pipe, cable or protective tubing
- F16L3/1211—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing comprising a member substantially surrounding the pipe, cable or protective tubing with a substantially-radial tightening or securing member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
- F16L3/08—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing
- F16L3/12—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing comprising a member substantially surrounding the pipe, cable or protective tubing
- F16L3/133—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing comprising a member substantially surrounding the pipe, cable or protective tubing and hanging from a pendant
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/02—Energy absorbers; Noise absorbers
- F16L55/033—Noise absorbers
- F16L55/035—Noise absorbers in the form of specially adapted hangers or supports
Definitions
- This disclosure relates to a tapered flange nut with a locking insert.
- the disclosure relates to use of the disclosed nut with an improved side-load, and a bottom-load-type pipe hanger and a manner of securing a liner in place within such hanger.
- the present invention relates to an improvement of the pipe hanger disclosed by Applicant's U.S. Pat. Nos. 5,007,604 and 4,735,386, incorporated herein by reference.
- a tapered flange nut in one example comprising: a first longitudinal end and an opposed second longitudinal end; a longitudinally aligned central opening extending from the first longitudinal end to the second longitudinal end; wherein the central opening comprises threads; wherein the first longitudinal end comprises a radially outward surface having a cross-sectional shape that is other than circular; wherein the outer surface of the first longitudinal end tapers radially outward toward the second longitudinal end forming a radially widest part of the first longitudinal end; a flange portion longitudinally between the first longitudinal end and the second longitudinal end; the flange portion extending radially outward from the outer surface of the radially widest part of the first longitudinal end ; a locking insert provided within the central opening at the second longitudinal end of the improved nut; and the locking insert configured to hinder undesired rotation of a bolt threaded into the insert relative to the improved nut.
- the tapered flange nut as recited above may further comprise a non-threaded conical entry to the central opening at the first longitudinal end.
- the tapered flange nut as recited above may be arranged wherein the flange portion tapers radially inward toward the first longitudinal end to further center the nut within a non-circular opening.
- FIG. 1 is an isometric, partially exploded view of an improved side-load hanger in one form.
- FIG. 2 is a cutaway view of a tapered flange nut in one form.
- FIG. 3 is an isometric view of an improved side-load hanger in one form.
- FIG. 4 is a side view of a tapered flange nut in one form.
- FIG. 5 is a bottom view of a tapered flange nut in one form.
- FIG. 6 is a side view of an improved bottom-load hanger in one form.
- the disclosed embodiment comprises a saddle 10 , which in basic configuration may be like saddle 10 of the prior art hanger disclosed by the aforementioned U.S. Pat. No. 4,735,386.
- the saddle 10 may be supported by a support leg 12 , which is welded at its lower end at weld 14 , to an upper portion of the saddle 10 .
- Saddle 10 includes a first or lower arm portion 16 , a second or upper arm portion 18 , and an interconnecting bight portion 20 .
- a liner 22 is received within the inner space of the saddle.
- the liner has an elongated side portion 24 that extends along arm portion 18 of the saddle 10 , a rounded bight portion 26 which extends around the bight portion 20 of the saddle 10 , and a shorter side portion 28 which extends alongside of a bolt 30 , between it and the pipe section 32 (see FIG. 3 ).
- the liner 22 has a web portion 34 that is substantially as wide as the saddle members 16 , 18 , 20 , and a pair of side flanges 36 and 38 ( FIG. 1 ).
- the liner is produced of neoprene, although other materials could be utilized.
- the flange side 35 of the web portion 34 makes contact with the inner surfaces 37 of the upper arm portion 18 , the saddle bight portion 20 , and a side surface of the rod body 40 of the bolt 30 .
- the opposite side 39 of the web portion 34 makes contact with about three-fourths of the outer surface of the pipe section 32 .
- a first opening 42 is provided in the lower arm portion 16 .
- a second and larger non-circular opening 44 is provided in the upper arm portion 18 .
- the centers of openings 42 and 44 in one form are in substantial vertical alignment.
- An opening 46 is provided in the web portion 34 of the liner 22 . When the liner 22 is positioned in the manner illustrated, this opening 46 is in alignment with the openings 42 and 44 and allows passage of the rod body 40 of the bolt 30 .
- the bolt 30 in one form is inserted through the openings 42 , 46 and 44 .
- the bolt 30 includes an enlarged non-circular head 48 at one end and a threaded portion 50 at its opposite end.
- the bolt 30 is adapted to mate with the internal threads of a tapered flange nut 52 .
- the tapered flange nut 52 comprises a tapered end having a small (first) end portion 54 , a larger (second) end portion 56 and a shoulder 58 , defined where the tapered end meets a flange 59 .
- Nut 52 includes a threaded central opening 60 having thread complimentary to the threads on threaded portion 50 of the bolt 30 .
- the tapered flange nut 52 may also include a non-threaded conical entry end 85 or lead threads.
- the small end portion 54 in one form, is hexagonal, or comprises a non frusto-conical outer surface which is tapered from the small end portion 54 outward to the shoulder 58 to engage the inner surface of the opening 44 , and once engaged, to prohibit rotation of the tapered flange nut 52 relative to the saddle 10 .
- the tapered portion of the tapered flange nut 52 provides even greater force resisting rotation.
- the tapered flange nut 52 may include an insert 94 fixed within the upper or exit edge 82 for hindering undesired rotation of the bolt 30 relative to the tapered flange nut 52 once installed upon the saddle 10 .
- an elastic stop insert 94 is utilized or other forms of polymer or deformable material. Nylon is one common material used as the elastic stop insert 94 .
- the inner diameter 84 of the insert 94 is smaller than the major diameter of the bolt 30 , improving the locking function of the nut 52 .
- the use of such inserts is especially useful when using stainless steel nuts and bolts, which are inherently susceptible to damage when utilized in an interference fit with other stainless steel surfaces.
- the shoulder surface 96 of the nut 52 which engages the upper surface of the saddle 10 , is substantially planar, or, as shown in FIG. 2 , may be tapered from the shoulder 58 to the outer edge 91 of the flange 59 .
- the small end portion 54 of nut 52 is sized to be snugly received within the opening 44 as previously described, but in at least one embodiment there is no portion for the purpose of permanently securing the nut 52 in place. Rather, the opening 44 functions as a “box” wrench for holding the tapered small end portion 54 , and hence nut 52 , against turning when the small end portion 54 is within the opening 44 and torque is being applied to the bolt 30 .
- the first (lower) opening 42 of the saddle 10 is oversized relative to the rod body 40 of the bolt 30 in at least one embodiment.
- the bolt 30 can be inserted upwardly through first opening 42 rather quickly and easily.
- the openings 46 and 44 in one form, are substantially larger than the upper end portion 50 of bolt 30 , so it is quite easy to locate the end portion 50 relative to first opening 42 and the opening 44 ; thus, the bolt 30 can be quickly inserted through these openings 46 and 44 .
- the pipe section 32 and the liner 22 are moved laterally into the open throat of the saddle 10 .
- the liner 22 may be installed first. Then the pipe section 32 may be positioned within the liner 22 , and the side portion 28 of the liner pre-formed or bent upwardly, before the bolt 30 is installed. Alternately, the liner 22 may be wrapped about the pipe section 32 , and the assembly installed in the saddle 10 .
- the bolt 30 is moved upwardly through the openings 42 , 46 and 44 , as previously discussed.
- the nut 52 is brought into engagement with the threaded portion 50 of the bolt 30 , with the small end portion 54 directed downwardly.
- the nut 52 is screwed onto the threads 50 until the nut and bolt assembly 52 / 30 is joined.
- the nut/bolt assembly 52 / 30 may be allowed to drop downwardly to place the small end portion 54 of the nut 52 into the opening 44 .
- the non-circular opening 44 now functions as a wrench, enabling a single wrench to be used on the bolt head 48 for rotating the bolt 30 a sufficient amount to apply the necessary squeezing or clamping force on the pipe section 32 and liner 22 .
- the rod body 40 of bolt 30 may provide an installation clearance fit within the opening 42 .
- the nut and bolt assembly 52 / 30 is aligned by the turning force on bolt 30 to a position in which the axis of the bolt 30 extends substantially perpendicular to the surface of arm portion 18 , which shoulder 58 bears against.
- the inner surface of the bolt head 48 exerts a force on the lower arm portion 16 .
- the lower arm portion 16 has a relatively long unsupported portion, and as a result it can bend much more freely than the upper arm portion 18 .
- the clamping pressure is applied to the pipe section 32 and liner 22 by the lower arm portion 16 , bending upwardly toward the upper arm portion 18 .
- the loose fit of rod body 40 within opening 42 allows relative movement to occur between the rod body 40 and the lower arm portion 16 , so that bending is not apt to occur between the rod body 40 and the surfaces of opening 42 , in a manner tending to resist upward deflection of arm portion 16 .
- the support leg 12 is a tubular member of substantial diameter, having a reduced diameter, lower end portion 13 .
- the weld bead 15 extends about the circumference of the reduced diameter end portion. This circumference is relatively long, resulting in a relatively strong weld connection between the support leg 12 and the saddle 10 .
- the reduction of the size of the lower end of the support leg 12 in this embodiment provides more room about the opening 44 for handling and placement of the nut 52 .
- FIG. 6 shows a similar embodiment, without the reduced diameter lower end portion.
- the support leg could be constructed in a number of different ways. It could be a single member, as illustrated, it could take one of the forms disclosed in Applicant's aforementioned U.S. Pat. No. 5,007,604, it could take the two-part form disclosed in U.S. Pat. No. 5,092,547 (also incorporated by reference and entitled “Pipe Hanger with Shock Load Absorbing Support Leg”), as well as other forms.
- the pipe hangers are often subjected to very severe shock loads. As a result, it is useful in many applications that the center of the support leg 12 is kept directly above the center of the pipe section 32 . For this reason, with some size pipe hangers, it is necessary to reduce the size of the lower end portion of the support leg 12 so that sufficient room exists along side of the support leg 12 to accommodate the flange 59 of the nut 52 .
- the upper portion of the liner 22 is extended out to extend substantially the full length of the upper saddle arm portion 18 , and a bolt receiving opening 46 is provided in the web portion 34 of the liner 22 .
- a bolt receiving opening 46 is provided in the web portion 34 of the liner 22 .
- This enables the liner 22 to be connected to the other parts of the hanger during transportation and handling prior to assembly.
- the use of a removable fastener makes this type of connection possible and convenient.
- FIG. 3 when the liner 22 is within the saddle 10 and the nut and bolt assembly 52 / 30 is installed, the liner 22 is very secure. This is because the liner and saddle surfaces cooperate with the nut and bolt assembly 52 / 30 to not only connect the liner 22 to the upper saddle arm portion 18 but also to prevent the liner 22 from flopping around and being in a position to be damaged.
- FIG. 6 there is shown a side view of a standard “T” strap, bottom-load pipe hanger utilizing the disclosed tapered nuts. It comprises a support leg 12 welded at weld bead 15 to a midportion of an upper clamp strap 61 .
- a lower clamp strap 62 is provided which is of similar configuration, but this member is in at least one form separable from the rest of the assembly.
- the mid portions of the clamp straps 61 and 62 are generally curved.
- Each strap includes a pair of ears, 64 / 66 and 68 / 70 , respectively.
- the lower clamp strap 62 in one form comprises a first opening 86 , and a second opening 88 to receive the first bolt 74 and second bolt 76 respectively.
- the upper clamp strap 61 in one form comprises a first non-circular opening 90 and a second non-circular opening 92 to receive the first bolt 74 and second bolt 76 respectively, and also to receive and prohibit rotation of the first nut 52 a and second nut 52 b respectively.
- a resilient pad or liner 72 is provided within the curved portions of the clamp straps 61 and 62 .
- a liner similar to the liner 22 previously described could also be utilized. In use, the liner 72 is in contact with the pipe, wire bundle, or similar structure.
- a first bolt 74 extends through aligned openings in the ears 64 and 68
- a second bolt 76 extends through aligned openings in the ears 66 and 70 .
- a nut 52 is threaded onto each of the threaded end portions 78 and 80 .
- the nut and bolt assemblies are screwed together for drawing the two clamp straps 61 and 62 together and into clamping engagement with the pipe.
- the shank portions of the bolts 30 are, in one form, smaller in diameter than the openings in the ears 64 and 66 and 68 and 70 , so that there is a relatively loose fit of the bolts 30 within the holes.
- the bolt heads are most generally located at the bottom of the assembly.
- the surface of the bolt heads which contact the surfaces of the ears 68 and 70 are normally flat, and the nuts 52 are formed as described above. They present a tapered, noncircular surface to the holes in the ears 64 and 66 , and a tapered or flat shoulder surface 96 to the surface of the ears 64 and 66 .
- the hanger shown in FIG. 6 is recognized as being strong and the pressure of the clamp straps 61 and 62 on the pipe can be easily adjusted by regulating the tightening of the nut and bolt assemblies.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Supports For Pipes And Cables (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
Description
- This application claims priority benefit of and is a Divisional Application of U.S. Ser. No. 14/531,834 filed on Nov. 3, 2014, a Divisional claiming priority of U.S. Pat. No. 8,876,066 issued on Nov. 4, 2014 claims priority to 61/287,491, filed Dec. 17, 2009. Each of these is incorporated herein by reference
- a) Field of the disclosure
- This disclosure relates to a tapered flange nut with a locking insert. In one example the disclosure relates to use of the disclosed nut with an improved side-load, and a bottom-load-type pipe hanger and a manner of securing a liner in place within such hanger.
- b) Background Art
- The present invention relates to an improvement of the pipe hanger disclosed by Applicant's U.S. Pat. Nos. 5,007,604 and 4,735,386, incorporated herein by reference.
- Disclosed herein is a tapered flange nut in one example comprising: a first longitudinal end and an opposed second longitudinal end; a longitudinally aligned central opening extending from the first longitudinal end to the second longitudinal end; wherein the central opening comprises threads; wherein the first longitudinal end comprises a radially outward surface having a cross-sectional shape that is other than circular; wherein the outer surface of the first longitudinal end tapers radially outward toward the second longitudinal end forming a radially widest part of the first longitudinal end; a flange portion longitudinally between the first longitudinal end and the second longitudinal end; the flange portion extending radially outward from the outer surface of the radially widest part of the first longitudinal end ; a locking insert provided within the central opening at the second longitudinal end of the improved nut; and the locking insert configured to hinder undesired rotation of a bolt threaded into the insert relative to the improved nut.
- The tapered flange nut as recited above may further comprise a non-threaded conical entry to the central opening at the first longitudinal end.
- The tapered flange nut as recited above may be arranged wherein the flange portion tapers radially inward toward the first longitudinal end to further center the nut within a non-circular opening.
-
FIG. 1 is an isometric, partially exploded view of an improved side-load hanger in one form. -
FIG. 2 is a cutaway view of a tapered flange nut in one form. -
FIG. 3 is an isometric view of an improved side-load hanger in one form. -
FIG. 4 is a side view of a tapered flange nut in one form. -
FIG. 5 is a bottom view of a tapered flange nut in one form. -
FIG. 6 is a side view of an improved bottom-load hanger in one form. - Referring to
FIG. 1 , the disclosed embodiment comprises asaddle 10, which in basic configuration may be likesaddle 10 of the prior art hanger disclosed by the aforementioned U.S. Pat. No. 4,735,386. Thesaddle 10 may be supported by asupport leg 12, which is welded at its lower end atweld 14, to an upper portion of thesaddle 10.Saddle 10 includes a first orlower arm portion 16, a second orupper arm portion 18, and an interconnectingbight portion 20. - A
liner 22 is received within the inner space of the saddle. In accordance with the invention, the liner has anelongated side portion 24 that extends alongarm portion 18 of thesaddle 10, arounded bight portion 26 which extends around thebight portion 20 of thesaddle 10, and ashorter side portion 28 which extends alongside of abolt 30, between it and the pipe section 32 (seeFIG. 3 ). Theliner 22 has aweb portion 34 that is substantially as wide as thesaddle members side flanges 36 and 38 (FIG. 1 ). In one form, the liner is produced of neoprene, although other materials could be utilized. Theflange side 35 of theweb portion 34 makes contact with theinner surfaces 37 of theupper arm portion 18, thesaddle bight portion 20, and a side surface of therod body 40 of thebolt 30. Theopposite side 39 of theweb portion 34 makes contact with about three-fourths of the outer surface of thepipe section 32. - A
first opening 42 is provided in thelower arm portion 16. A second and largernon-circular opening 44 is provided in theupper arm portion 18. The centers ofopenings - An opening 46 is provided in the
web portion 34 of theliner 22. When theliner 22 is positioned in the manner illustrated, this opening 46 is in alignment with theopenings rod body 40 of thebolt 30. - The
bolt 30 in one form is inserted through theopenings rod body 40, thebolt 30 includes an enlargednon-circular head 48 at one end and a threadedportion 50 at its opposite end. Thebolt 30 is adapted to mate with the internal threads of atapered flange nut 52. - As shown by
FIGS. 2 , 4 and 5, thetapered flange nut 52 comprises a tapered end having a small (first)end portion 54, a larger (second)end portion 56 and ashoulder 58, defined where the tapered end meets aflange 59.Nut 52 includes a threadedcentral opening 60 having thread complimentary to the threads on threadedportion 50 of thebolt 30. Thetapered flange nut 52 may also include a non-threadedconical entry end 85 or lead threads. - The
small end portion 54, in one form, is hexagonal, or comprises a non frusto-conical outer surface which is tapered from thesmall end portion 54 outward to theshoulder 58 to engage the inner surface of theopening 44, and once engaged, to prohibit rotation of thetapered flange nut 52 relative to thesaddle 10. As the bolt provides tensile force upon thesaddle 10 between theupper arm portion 18 and thelower portion 16, the tapered portion of thetapered flange nut 52 provides even greater force resisting rotation. - In one form, the
tapered flange nut 52 may include aninsert 94 fixed within the upper orexit edge 82 for hindering undesired rotation of thebolt 30 relative to thetapered flange nut 52 once installed upon thesaddle 10. In one form, anelastic stop insert 94 is utilized or other forms of polymer or deformable material. Nylon is one common material used as the elastic stop insert 94. Generally, theinner diameter 84 of theinsert 94 is smaller than the major diameter of thebolt 30, improving the locking function of thenut 52. The use of such inserts is especially useful when using stainless steel nuts and bolts, which are inherently susceptible to damage when utilized in an interference fit with other stainless steel surfaces. During installation, it may be found necessary to push the bolt/nut assembly 30/52 downward to temporarily seat the tapered surface of the nut within thenon-circular opening 44 while the bolt is rotated to the correct torque. This method is especially useful when it is not convenient to reach or see thenut 52, such as in overhead installations. In one form, theshoulder surface 96 of thenut 52, which engages the upper surface of thesaddle 10, is substantially planar, or, as shown inFIG. 2 , may be tapered from theshoulder 58 to theouter edge 91 of theflange 59. During installation, in one form, when theshoulder surface 96 is seated upon the upper edge of thenon-circular opening 44 of the upper surface of thesaddle 10, as thehead 48 of thebolt 30 is also in contact with the saddle, this indicates to the installer that the correct tension has been achieved. - In one form, the
small end portion 54 ofnut 52 is sized to be snugly received within theopening 44 as previously described, but in at least one embodiment there is no portion for the purpose of permanently securing thenut 52 in place. Rather, the opening 44 functions as a “box” wrench for holding the taperedsmall end portion 54, and hencenut 52, against turning when thesmall end portion 54 is within the opening 44 and torque is being applied to thebolt 30. - As is shown, the first (lower)
opening 42 of thesaddle 10 is oversized relative to therod body 40 of thebolt 30 in at least one embodiment. Thus, thebolt 30 can be inserted upwardly throughfirst opening 42 rather quickly and easily. Theopenings 46 and 44, in one form, are substantially larger than theupper end portion 50 ofbolt 30, so it is quite easy to locate theend portion 50 relative to first opening 42 and theopening 44; thus, thebolt 30 can be quickly inserted through theseopenings 46 and 44. - In accordance with at least one embodiment, the
pipe section 32 and theliner 22, shown inFIG. 3 , are moved laterally into the open throat of thesaddle 10. Theliner 22 may be installed first. Then thepipe section 32 may be positioned within theliner 22, and theside portion 28 of the liner pre-formed or bent upwardly, before thebolt 30 is installed. Alternately, theliner 22 may be wrapped about thepipe section 32, and the assembly installed in thesaddle 10. - Once in position, the
bolt 30 is moved upwardly through theopenings nut 52 is brought into engagement with the threadedportion 50 of thebolt 30, with thesmall end portion 54 directed downwardly. Thenut 52 is screwed onto thethreads 50 until the nut andbolt assembly 52/30 is joined. Then, the nut/bolt assembly 52/30 may be allowed to drop downwardly to place thesmall end portion 54 of thenut 52 into theopening 44. Thenon-circular opening 44 now functions as a wrench, enabling a single wrench to be used on thebolt head 48 for rotating the bolt 30 a sufficient amount to apply the necessary squeezing or clamping force on thepipe section 32 andliner 22. As previously described it may be found necessary to push the bolt/nut assembly 30/52 downward to temporarily seat the tapered surface of the nut within thenon-circular opening 44 while the bolt is rotated to the correct torque. The objective of this tensioning is positioning of the liner about the pipe to hold the pipe in place against movement and vibration. It is normally not desired to deform the pipe during this installation. - When the
small end portion 54 of the taperedflange nut 52 is within opening 44 and thebolt 30 is tightened, something else happens. The side surfaces ofsmall end portion 54 are moved into contact with the side surfaces of theopening 44. As thebolt head 48 and thenut 52 are drawn together, theshoulder 58 andflange 59 may be drawn into tight engagement with the metal surrounding theopening 44. - The tight fit of
small end portion 54 within theopening 44, and the pressure exerted by theshoulder 58 against the region ofupper arm portion 18 which surrounds theopening 44, serve to stiffen the part ofupper arm portion 18, which extends outwardly from thesupport leg 12 so that it does not tend to bend. This is in contrast with many prior art hangers. - The
rod body 40 ofbolt 30 may provide an installation clearance fit within theopening 42. As a result, the nut andbolt assembly 52/30 is aligned by the turning force onbolt 30 to a position in which the axis of thebolt 30 extends substantially perpendicular to the surface ofarm portion 18, whichshoulder 58 bears against. The inner surface of thebolt head 48 exerts a force on thelower arm portion 16. Thelower arm portion 16 has a relatively long unsupported portion, and as a result it can bend much more freely than theupper arm portion 18. Thus, the clamping pressure is applied to thepipe section 32 andliner 22 by thelower arm portion 16, bending upwardly toward theupper arm portion 18. The loose fit ofrod body 40 withinopening 42 allows relative movement to occur between therod body 40 and thelower arm portion 16, so that bending is not apt to occur between therod body 40 and the surfaces of opening 42, in a manner tending to resist upward deflection ofarm portion 16. - In these embodiments, it is possible to round off the outer end portions of
upper arm portion 18, eliminating sharp corners. The outer end of thelower arm portion 16 is also rounded. The engagement of thesmall end portion 54 within theopening 44 and the pressure of theshoulder 58 against thearm portion 18 resist bending ofarm portion 18, resulting in protection for theweld 14. The weld is not likely to tear as it would if the outstanding part ofarm portion 18 were to be bent downwardly, as required by several prior art hangers. - In the illustrated embodiments of
FIGS. 1 and 3 , thesupport leg 12 is a tubular member of substantial diameter, having a reduced diameter,lower end portion 13. Theweld bead 15 extends about the circumference of the reduced diameter end portion. This circumference is relatively long, resulting in a relatively strong weld connection between thesupport leg 12 and thesaddle 10. The reduction of the size of the lower end of thesupport leg 12 in this embodiment provides more room about theopening 44 for handling and placement of thenut 52.FIG. 6 shows a similar embodiment, without the reduced diameter lower end portion. - It is to be understood that the support leg could be constructed in a number of different ways. It could be a single member, as illustrated, it could take one of the forms disclosed in Applicant's aforementioned U.S. Pat. No. 5,007,604, it could take the two-part form disclosed in U.S. Pat. No. 5,092,547 (also incorporated by reference and entitled “Pipe Hanger with Shock Load Absorbing Support Leg”), as well as other forms.
- In use, the pipe hangers are often subjected to very severe shock loads. As a result, it is useful in many applications that the center of the
support leg 12 is kept directly above the center of thepipe section 32. For this reason, with some size pipe hangers, it is necessary to reduce the size of the lower end portion of thesupport leg 12 so that sufficient room exists along side of thesupport leg 12 to accommodate theflange 59 of thenut 52. - In one embodiment as shown in
FIG. 1 , the upper portion of theliner 22 is extended out to extend substantially the full length of the uppersaddle arm portion 18, and a bolt receiving opening 46 is provided in theweb portion 34 of theliner 22. This enables theliner 22 to be connected to the other parts of the hanger during transportation and handling prior to assembly. The use of a removable fastener makes this type of connection possible and convenient. As shown inFIG. 3 , when theliner 22 is within thesaddle 10 and the nut andbolt assembly 52/30 is installed, theliner 22 is very secure. This is because the liner and saddle surfaces cooperate with the nut andbolt assembly 52/30 to not only connect theliner 22 to the uppersaddle arm portion 18 but also to prevent theliner 22 from flopping around and being in a position to be damaged. - Looking to
FIG. 6 , there is shown a side view of a standard “T” strap, bottom-load pipe hanger utilizing the disclosed tapered nuts. It comprises asupport leg 12 welded atweld bead 15 to a midportion of anupper clamp strap 61. Alower clamp strap 62 is provided which is of similar configuration, but this member is in at least one form separable from the rest of the assembly. The mid portions of the clamp straps 61 and 62 are generally curved. Each strap includes a pair of ears, 64/66 and 68/70, respectively. Thelower clamp strap 62 in one form comprises afirst opening 86, and asecond opening 88 to receive thefirst bolt 74 andsecond bolt 76 respectively. Theupper clamp strap 61 in one form comprises a firstnon-circular opening 90 and a secondnon-circular opening 92 to receive thefirst bolt 74 andsecond bolt 76 respectively, and also to receive and prohibit rotation of thefirst nut 52 a and second nut 52 b respectively. A resilient pad orliner 72 is provided within the curved portions of the clamp straps 61 and 62. A liner similar to theliner 22 previously described could also be utilized. In use, theliner 72 is in contact with the pipe, wire bundle, or similar structure. Afirst bolt 74 extends through aligned openings in theears second bolt 76 extends through aligned openings in theears nut 52 is threaded onto each of the threadedend portions clamp straps bolts 30 are, in one form, smaller in diameter than the openings in theears bolts 30 within the holes. The bolt heads are most generally located at the bottom of the assembly. The surface of the bolt heads which contact the surfaces of theears ears flat shoulder surface 96 to the surface of theears - The hanger shown in
FIG. 6 is recognized as being strong and the pressure of the clamp straps 61 and 62 on the pipe can be easily adjusted by regulating the tightening of the nut and bolt assemblies. - While the present invention is illustrated by description of several embodiments and while the illustrative embodiments are described in detail, it is not the intention of the applicants to restrict or in any way limit the scope of the appended claims to such detail. Additional advantages and modifications within the scope of the appended claims will readily appear to those sufficed in the art. The invention in its broader aspects is therefore not limited to the specific details, representative apparatus and methods, and illustrative examples shown and described. Accordingly, departures may be made from such details without departing from the spirit or scope of applicants' general concept.
Claims (3)
Priority Applications (1)
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US14/853,643 US9482262B2 (en) | 2009-12-17 | 2015-09-14 | Tapered flange nut with locking insert |
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US28749109P | 2009-12-17 | 2009-12-17 | |
US12/837,037 US8876066B1 (en) | 2009-12-17 | 2010-07-15 | Hanger with bolt closures |
US14/531,834 US9133875B2 (en) | 2009-12-17 | 2014-11-03 | Hanger with bolt closure |
US14/853,643 US9482262B2 (en) | 2009-12-17 | 2015-09-14 | Tapered flange nut with locking insert |
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US14/531,834 Division US9133875B2 (en) | 2009-12-17 | 2014-11-03 | Hanger with bolt closure |
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US9482262B2 US9482262B2 (en) | 2016-11-01 |
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US14/531,834 Active US9133875B2 (en) | 2009-12-17 | 2014-11-03 | Hanger with bolt closure |
US14/853,643 Active US9482262B2 (en) | 2009-12-17 | 2015-09-14 | Tapered flange nut with locking insert |
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US14/531,834 Active US9133875B2 (en) | 2009-12-17 | 2014-11-03 | Hanger with bolt closure |
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Publication number | Priority date | Publication date | Assignee | Title |
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WO2021055479A1 (en) * | 2019-09-17 | 2021-03-25 | Anvil International, Llc | Pipe hanger with lock tab washer |
US11359747B2 (en) | 2019-09-17 | 2022-06-14 | ASC Engineered Solutions, LLC | Pipe hanger with lock tab washer |
US11560969B2 (en) | 2019-09-17 | 2023-01-24 | ASC Engineered Solutions, LLC | Pipe hanger with lock tab washer |
Also Published As
Publication number | Publication date |
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US8876066B1 (en) | 2014-11-04 |
US9133875B2 (en) | 2015-09-15 |
US20150048219A1 (en) | 2015-02-19 |
US9482262B2 (en) | 2016-11-01 |
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